dt-bindings: Add devicetree bindings

Add snapshot of device tree bindings from keystone common kernel, branch
"android-mainline-keystone-qcom-release" at c4c12103f9c0 ("Snap for 9228065
from e32903b9a63bb558df8b803b076619c53c16baad to
android-mainline-keystone-qcom-release").

Change-Id: I7682079615cbd9f29340a5c1f2a1d84ec441a1f1
Signed-off-by: Melody Olvera <quic_molvera@quicinc.com>

bindings/opp/opp-v2-qcom-level.yaml

@@ -0,0 +1,61 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/opp/opp-v2-qcom-level.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm OPP bindings to describe OPP nodes.
+
+maintainers:
+  - Niklas Cassel <nks@flawful.org>
+
+allOf:
+  - $ref: opp-v2-base.yaml#
+
+properties:
+  compatible:
+    const: operating-points-v2-qcom-level
+
+patternProperties:
+  '^opp-?[0-9]+$':
+    type: object
+    additionalProperties: false
+
+    properties:
+      opp-level: true
+
+      qcom,opp-fuse-level:
+        description: |
+          A positive value representing the fuse corner/level associated with
+          this OPP node. Sometimes several corners/levels shares a certain fuse
+          corner/level. A fuse corner/level contains e.g. ref uV, min uV,
+          and max uV.
+        $ref: /schemas/types.yaml#/definitions/uint32
+
+    required:
+      - opp-level
+      - qcom,opp-fuse-level
+
+required:
+  - compatible
+
+additionalProperties: false
+
+examples:
+  - |
+    cpr_opp_table: opp-table-cpr {
+        compatible = "operating-points-v2-qcom-level";
+
+        cpr_opp1: opp1 {
+            opp-level = <1>;
+            qcom,opp-fuse-level = <1>;
+        };
+        cpr_opp2: opp2 {
+            opp-level = <2>;
+            qcom,opp-fuse-level = <2>;
+        };
+        cpr_opp3: opp3 {
+            opp-level = <3>;
+            qcom,opp-fuse-level = <3>;
+        };
+    };